DOS program cannot open any other sub menus

[chaineskrug]

I am struggling with an Old DOS program, and the initial menu opens fine but if you enter into a sub menu it just says "INVALID DRIVE" and doesn't actually type any commands. Do I need to run it in some higher level admin mode or enable some setting in the CONFIG file?

[Jos]

Your program would try to access a DOS drive letter that doesn’t exist in vDos.

If you know what drive letter, make it available in autoexec.txt by USE DOS_Drive_Letter: Windows_Path.

Else start vDos with the log option (….\vDos.exe /log), and look in the generated vDos.log for that drive letter.

Jos